Adhesive layer composition for in-mold decoration

Abstract

This invention relates to compositions suitable for the formation of an adhesive layer used for in-mold decoration. This invention also relates to in-mold decoration tape or strip, comprising: a carrier layer; a release layer; a durable layer; and an adhesive layer which comprises an adhesive binder, a polymeric particulate material and an inorganic particulate material.

1. An in-mold decoration tape or strip, comprising:
 i) a carrier layer; 
 ii) a release layer; 
 iii) a durable layer; and 
 iv) an adhesive layer which comprises an adhesive binder, a polymeric particulate material and an inorganic particulate material, wherein said polymeric particulate material is core-shell particles. 
 
     
     
       2. The tape or strip of  claim 1 , wherein said adhesive binder is selected from the group consisting of polyurethane, acrylics, styrene-butadiene rubber, polybutadiene, polyamides, pyrrolidone copolymers, oxazolidone copolymers, vinylidene chloride copolymers, vinylacetate copolymers, polyesters, and derivatives or blends thereof. 
     
     
       3. The tape or strip of  claim 1 , wherein said adhesive binder is a polyurethane, acrylic, or a hybrid thereof. 
     
     
       4. The tape or strip of  claim 1 , wherein said adhesive binder is a latex adhesive binder or a hydrocarbon dispersion adhesive. 
     
     
       5. The tape or strip of  claim 1 , wherein said adhesive binder takes up about 40% to about 90% by weight of the adhesive layer. 
     
     
       6. The tape or strip of  claim 1 , wherein said polymeric particulate material has a glass transition temperature higher than about 45.degree. C. 
     
     
       7. The tape or strip of  claim 1 , wherein said polymeric particulate material takes up about 5 to about 50% by weight of the adhesive layer. 
     
     
       8. The tape or strip of  claim 1 , wherein said polymeric particulate material is refractive index matched to said adhesive binder. 
     
     
       9. The tape or strip of  claim 1 , wherein the difference between refractive indexes of said polymeric particulate material and said adhesive binder is less than about 0.1. 
     
     
       10. The tape or strip of  claim 1 , wherein said shell has a glass transition temperature of higher than about 45° C. 
     
     
       11. The tape or strip of  claim 1 , wherein said core is refractive index matched to the shell or a blend of the shell and the adhesive binder. 
     
     
       12. The tape or strip of  claim 1 , wherein said inorganic particulate material is CaCO 3 , BaSO 4 , silica, glass beads, bentonite, or clay. 
     
     
       13. The tape or strip of  claim 1 , wherein said inorganic particulate material takes up about 1 to about 20% by weight of the adhesive layer. 
     
     
       14. The tape or strip of  claim 1 , wherein said inorganic particulate material takes up about 3 to about 15% by weight of the adhesive layer. 
     
     
       15. The tape or strip of  claim 1 , wherein said adhesive layer further comprising an organic particulate material. 
     
     
       16. The tape or strip of  claim 15 , wherein said organic particulate material is a latex material, organic crystals or a solid plasticizer. 
     
     
       17. The tape or strip of  claim 1 , wherein said adhesive layer further comprising a second inorganic particulate material. 
     
     
       18. The tape or strip of  claim 17 , wherein said first and second inorganic particulate materials are independently CaCO 3 , BaSO 4 , silica, glass beads, bentonite, or clay. 
     
     
       19. The tape or strip of  claim 17 , wherein the total concentration of said inorganic particulate material and said second inorganic particulate material is about 5 to about 50% by weight. 
     
     
       20. The tape or strip of  claim 1 , wherein said adhesive layer further comprising a solid plasticizer.